:root {
  --bg: #f6f9ff;
  --panel: #ffffff;
  --border: #e3e8f0;
  --text: #0f172a;
  --primary: #0c63ff;
  --muted: #4b5563;
  --accent: #0c63ff;
  --accent-2: #0bbf63;
  --bear: #d1433b;
  --shadow: 0 12px 40px rgba(15, 23, 42, 0.08);
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(12, 99, 255, 0.08), transparent 30%),
    radial-gradient(circle at 80% 0%, rgba(11, 191, 99, 0.08), transparent 35%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.page-header {
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  z-index: 10;
}

.header-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  gap: 12px;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  cursor: pointer;
  gap: 5px;
  padding: 10px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
}

.brand {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.5px;
}

.brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.nav-links a {
  padding: 8px 10px;
  color: var(--muted);
  font-weight: 600;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.ticker-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow);
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  cursor: pointer;
}

.ticker-label {
  letter-spacing: 0.02em;
  color: var(--primary);
}

.ticker-price {
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 600;
  font-size: 14px;
}

.pill.ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.main {
  padding: 20px 0 40px;
}

.hero {
  padding: 12px 0 8px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 1.4px;
  font-weight: 700;
  color: var(--accent);
  font-size: 12px;
  margin-bottom: 8px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 4vw, 36px);
}

h2, h3, h4 {
  margin: 0;
}

.muted {
  color: var(--muted);
}

.tiny {
  font-size: 12px;
}

.tags {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.price-card {
  background: linear-gradient(135deg, rgba(12, 99, 255, 0.08), rgba(11, 191, 99, 0.1));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.tool {
  margin-top: 6px;
}

.shell {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.shell__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.shell__grid--balanced {
  grid-template-columns: minmax(360px, 1.1fr) 1fr;
  align-items: start;
  grid-template-areas:
    "form results"
    "chart chart";
}

.shell__grid--balanced .grid-form {
  grid-area: form;
}

.shell__grid--balanced .grid-results {
  grid-area: results;
}

.shell__grid--balanced .grid-chart {
  grid-area: chart;
  width: 100%;
  justify-self: stretch;
}

.shell__grid--balanced .chart-card.compact {
  grid-column: 1 / -1;
}

.side-stack {
  display: grid;
  gap: 12px;
  grid-template-rows: auto 1fr;
}

.dca-form .form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-weight: 600;
  color: var(--text);
}

.input-group input,
.input-group select {
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #f9fbff;
  color: var(--text);
  font-size: 14px;
}

body.theme-dark .input-group input,
body.theme-dark .input-group select {
  background: rgba(255, 255, 255, 0.04);
}

.input-group small {
  display: block;
}

.results {
  background: rgba(12, 99, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.stat {
  padding: 12px;
  border-radius: 10px;
  background: rgba(12, 99, 255, 0.02);
  border: 1px solid var(--border);
}

.stat h3 {
  margin-top: 4px;
}

.chart-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: 12px;
}

.chart-card.compact {
  box-shadow: none;
  height: 100%;
}

.chart-area {
  position: relative;
  flex: 1;
  min-height: 320px;
  padding: 12px;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(12, 99, 255, 0.04), rgba(12, 99, 255, 0));
  border: 1px solid rgba(15, 23, 42, 0.08);
}

#dcaChart {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}

.legend {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.legend-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  border: 1px solid var(--border);
}

.legend-pill.dark {
  background: rgba(11, 191, 99, 0.1);
  color: #0f5132;
  border-color: rgba(11, 191, 99, 0.35);
}

.legend-pill.dashed::before {
  content: '';
  width: 14px;
  height: 2px;
  border-top: 2px dashed currentColor;
}

.legend-pill.bear {
  color: var(--bear);
}

.legend-pill.accent {
  color: var(--accent);
}

.scenario-note {
  margin-top: 10px;
  color: var(--muted);
}

@media (max-width: 800px) {
  .container {
    width: min(1200px, 94%);
  }

  .header-grid {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.25rem 0.75rem;
  }

  .nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }

  .header-meta {
    width: 100%;
    justify-content: space-between;
  }

  .ticker-chip {
    width: 100%;
    justify-content: space-between;
  }

  .nav-links {
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 0.75rem 0;
    border-top: 1px solid var(--border);
  }

  .nav-links.open {
    display: flex;
  }

  .hero-grid,
  .shell__grid,
  .shell__grid--balanced {
    grid-template-columns: 1fr;
  }

  .shell__grid--balanced {
    grid-template-areas:
      "form"
      "results"
      "chart";
  }

  .side-stack {
    grid-template-rows: auto auto;
  }

  .dca-form .form-grid {
    grid-template-columns: 1fr;
  }

  .result-grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }
}

@media (max-width: 540px) {
  .chart-area {
    height: 260px;
  }
}